W plus x plus y plus z equals 2 2w minus x minus y plus 2z equals 7 2w plus 3x plus 2y minus z equals negative 2 3w minus 2x minus y minus 3z equals negative 2?

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W plus x plus y plus z equals 2 2w minus x minus y plus 2z equals 7 2w plus 3x plus 2y minus z equals negative 2 3w minus 2x minus y minus 3z equals negative 2?